Rotary motor.



I W1 /VESSES I [N VE/V TOR.

Q I mzgwiflmzzeg BY- A. BRAUER, ROTARY MOTOR.

APPLIGATION FILED, JULY 29, 1910. 1,013.926

Patented J an. 9, 1912.

2 SHEBTSSHEET l.

1 A TTORNE Y.

' the i t idTAT PATENT TCE.

AUG-USE BEAVER, 01E INDEPENDENCE, MISSGURI, ASSIGNOR TO AUGUST BRAUER Sitlllhllfi'. 391 13.33 MOTOR, CQMFANY, F INDEPENDENCE, MISSOURI.

ROTARY MOTOR.

. Specification of Letters Patent.

Patented J an. 9, 1912.

Application filed July 29, 1810. Serial No. 574,500.

To all whom it may concern:

t nendein in the county of Jackson and btate of h souri, have invented certain new and useful lm irovements in Rotary Motors, of which the following is a specification.

This invention relates to rotary elastic fluid motors; and one object is to provide a motor of this character which is adapted to transmit the power of motive fluid-such as steam, air, etc.,-with the greatest el'liciency.

A further object is to provide a motor of this type wherein the fluid may-be worked either compound or in both cylinders at full pressure, by manipulation of valves.

A further object is to prevent stalling or loss in iciency by 'ireventing any extreme compres of the motive fluid between the working parts.

Further objects are to provide improved "ston paclzings and a simple valve for startg, stopping, reversing, and compoundg the motor.

In order that the invention may be fully understood, reference will now be made to the accompanying drawings, in which:

Figure 1 is a side elevation of the motor showing the reversing valve in vertical section. 2 is a vertical section of one of the cylinders showing the pistons in elevation. Fig. 3 is a reduced scale section on .e Tl Tl-l l of Fig. 2, omitting the reversng valve. Fig. 4 is a detail plan View of ersiing valve detached. Fig. 5 is a detail view of portion of the inner wall of either c .inder, showing the anti-pocketing recesses. Fig. 6 is a. plan view of a certain connection.

In the drawings I have shown the motor comprising two cylinders 1 and 2, rigidly mounted on a base 3. Each cylinder is made to receive a pair of pistons 4 and 5 which are formed w1th intcrmeshmg blades 6. The pistons are fixedly mounted on shafts 7 and 8 which extend through the cylinders and are coupled at 9; the projecting ends 8 receiving pulleys (not shown) for belt driving. I consider it unnecessary to provide gearing between the shafts, as the pistons themselves "form positive gears. l Vithin each cylinderl and 2 are two pairs of segmental liners 10, set respectively, above and below the pistons 4 and 5 and providing true surfaces for contacting the tips rluousr BRAUER, a

of the piston blades. Each liner is supported by two set-screws 12 which enter threaded holes therein and pass loosely through unthreaded holes in the cylinders; lengthwise motion of the screws being prevented by caps plates 13 projecting into grooves 1=1-in the screws.- By adjusting said screws the liners are adjusted to the piston blades, and when the blades and liners become worn the latter are easily and 'quickly readjusted.

At the sides of the cylinders, similar devices 12 are provided for holding and adjusting the liners at points quartering from the screws 12.

Cylinder 1 is provided with upper and lower ports 15 and 16, either of which may be used as an inlet port directly to the pistons, and theends of the liners are spaced apart to provide communication between ports 15 and 16 and the pistons.

The end walls 1 and 2 of each cylinderare formed with suitably-shaped recesses 17, arranged close to the meshing points of the piston blades as shown in Figs. 2 and 5. lVithout these recesses the motive fluid would become highly compressed between the revolving pistons with harmful effects. With the recesses the fluid compressed between the pistons will expand or escape into said recesses. The peripheries of the blades may therefore be accurately fitted together as shown in Fig. 2.

Each blade is provided with three peripheral packings 18 and 19, one of which is inserted in the tip or crown of the blade, the

others in the flanks thereof. These prevent leakage of fluid between the pistons when the motor is not in operation.

Adjacent to the motor is provided a valvechest 20, in which is mounted a reversing valve 21. This valve is provided with an inlet port 22, and exhaust-port, 23, and a racked portion 24. Mounted on a standard is a lever 26 having a gear sector 27 engaging the valve rack 24, and having a latch 28 adapted to engage three notches 29 in an are 30 on standard 25. The two extreme positions of the valve permit the motor to run, in opposite directions, and the intermediate position thereof cuts 03 the motive fluid. Connected to the valve chest 20 are the supply pipe 31 and the exhaust pipe 32.

inder 2. In pipe 34 is a hand-valve 35. The port 15 of cylinder 1 is connected by a pipe 36 with the valve-chest 20.

Connected to the upper port 15 of cylinder 2 is a three-way union 37. In opposite sides of cylinder 1 are ports 38, to which are connected, respectively, two pipes 39 which are each connected to the lateral ways of the union 37. In each pipe 39 is a hand-valve 40. These pipes 39 are connected together by a cross-pipe 4,1. with cross-pipe 41 by a pipe 44, in which, is a hand-valve 45. Connected to the lower port 16 of cylinder 2 is an exhaust pipe 42, which is connected to the valve-chest 20 adjacent the valveport 23. From the union 3? a pipe is connected tothe valve-chest 20 adjacent the valve-port 22. The valves 40 are between the cross-connection 41 and the union 37.

\Vith the valve 21 in the position shown inrespective cylinders through pipes 36 and 43. Cylinder lexhausts through pipe 34 into cylinder 2, thence through pipe 42,

valve. port 23, and exhaust pipe 32. (Jylinder 2 exhausts also through pipe 42, etc.

To use the fluid compound, the lever 26 is moved to middle position and latched, thereby causing the valve-lip 20 to close the month of pipe 43. shutting off the pressure from cylinder 2. Valves 40 are opened, also valve 35; and valve 45 is closed. The fluid now actuatcs the pistons as before, and exhausts through ports 33 and 16. From the former it traverses pipes 39 enters the inlet I port l5-ot' cylinder 2, actuate-s the. pistons 4 therein and exhausts as above statedl That I n q I portion of the fluid 1n cylinder 1 which exhausts throu h ort; 16, iasses throu 'h valve -35, pipe 34, into cylinder 2, thence outby way of pipe 42, etc. 1 The cylinder 2 and its pistons are made proportionately longer than the primary cylinder 1. to the end that the power developed in the former by the reduced pressure may equal the power developed in the latter by the full initial pressure.

The motor may be stopped by causing the valve lip 20"to cover the mouths of the pipes 36 and 43. The motor may be reversed by throwing the lever 26 to the extreme right, whereby the pipe 42 will be cut ott' from the exhaust pipe 32. the pipes 36 and 43 conminnicating with said exhaustpipe 32 through valve port 23,-and the pipe 33 con nccted with the supply pipe 31 through the. valve-port 'lhe fluid will then enter vl inder 1' at the bottom port 16.and drive the Pipe 34 is connectedpistons reversely, exhausting through ort 15 and pipe 36, also through ports 38, pipes 39, pipes 44, and through pipe 34 into cylinder 2, when. it acts upon pistons 5 beforeesraping through port 15, pipe 43, and port the one cylinder to the intake of the other,

when the motor is runningcompound. It

will also be understood that the pipe'34 when open may serve either of two purposes; to connect the exhaust of cylinder l with the exhaust pipe 42 through a part of the cylinder 2,'when-r1mning in one direction; or to convey the live fluid from pipe 33 to the intake of cylinder 2 when running in the othe direction.

\Vhen desired the motor may be employed to good advantage for pumping water in which case it. may be driven by any other Sllltfil)l(!.1nOl0I, 01 piston 5 may be utilized for pumping'water while driven by piston 4.

Having thus described my invention, what I claim is:

1. A rotary motor comprising two cylinders'of unequal dimensions, two coupled shafts extending through the cylinders, twin intermeshi'ng pistons fixedly-mounted on the shafts, within each cylinder, means for supplying fluid at full pressure to the smaller cy]inder,'conneetions between the exhaust of the smaller cylinder and the intakeof the larger cylinder, :1 connection between one intake or exhaust portof the smaller cylinder, and one intake or exhaust port of the larger cylinder, and a connection between the last'named connection and the above-named connections. I

2. A rotary motor comprising two cylinders of unequal dimensions, two coupled shafts extending through the cylinders, twin internieshing pistons fixedly-monntedon theshat'ts within each cylinder, means for supplying fluidv at full pressure to the smaller cylinder, a pipe 34 connecting a port of the smaller cylinder with sport of the larger cylinder, pipes 39 connecting exhaust ports of the former with an inlet port of the latter, a pipe 41 connecting the pipes 39, a con: nection between pipes 41 and 34, and exhaust connections to both cylinders.

3. A rotarymotor comprising two cylinders, two coupled shafts passing through the cylinders. twin intermeshing pistons fixedly-monnted on thesha-fts within each cyl inder, a valve-chest, .connections between said chest and the inlets and, exhausts'of each cylinder, a valve in said chest, adapted to start and stop the motor and also to govcm the flow of thefluid for compound or other operation, connections for fluid between the cylinders, and manual valves in said connections.

A rotary motor comprising two cylinders, we coupled shafts passing through the cylinders, twin. intermeshing pistons fixedly-niounted on the shafts within each cylinder, 'avalvc-chest, connections between said chest and the inlets and exhausts of each cylinder, a valvein said chest, adapted to start and stop the motor and also to reverse the running direction of the motor,

connections for fluid between the cylinders,

and manual valves in said connections.

- 5. A rotary motor comprising two cylinders, two coupled shafts passing through the cylinders, twin intermeshing pistons fixedlyrnonnted on the shafts within each cylinder, a valve-chest, pipes 33 and 36 connecting opposite ports of one cylinder to the valve chest, pipes l2 and 43 connecting opposite ports of the other cylinder. to the valve chest, a valve adapted to connect pipes 36 and as simultaneously to pressure and pipe 4-2 to exhaust, or to close pipe 4&3 only, or

. to connect pipe 33 to pressure and pipes 36 and 43 to exhaust while closing pipe 42; connections between exhaust ports of one -cylinder and a port of the other cylinder,

and a connection 34 between other ports of the cylinders.

6. In a rotary motor, the cylinders 1, 2, the shafts 7, 8, the pistons 4, 5, the pipes 39, the valves 40 in the pipes 39, the valve-chest, the pipes 43, 33, and 42, the pipe 34, the valve 35 in pipe 34, the cross connections 41, the connection 44: between 41 and 34, and the valve 45 in connection 44.

7, In a rotary motor, a cylinder, two shafts extending therethrough, twin intermeshing pistons fixedly-mounted on the shafts, a plurality of adjustable segmental liners contacting each piston and covering substantially, the entire interior surface of the cylinder, and screws for adjusting said liners. I

8. In a rotary motor, a cylinder having end walls, twin internieshing pistons rotativ'ely-niounted within the cylinder, said pistons having interfitting blades, and said end walls being formed with recesses adapted to relieve excessive pressure between coengaged blades of the two pistons, said recesses extending above and below the coengaged blades.

In testimony whereof I afiix'my signature, in the presence of two witnesses.

' AUGUST BRAUER. Witnesses:

F. G. FISCHER, M. Cox. 

